Cover for concealed toilet flush tank



FIG. 1 is a perspective view taken from the top, front and right side of a cover for a concealed toilet flush tank showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof.

The fragmentary broken line representation of a bathroom wall in FIG. 1 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a cover for concealed toilet flush tank, as shown and described. 